Black leaf check book



(No Model.)

T. G. COOPER.

BLACK LEA]? CHECK BOOK. No. 323,276. Patented July 28, 1885.

v I I UNITED STATES PATENT OFFICE.

THOMAS G. COOPER, OF JARVIS, ONTARIO, ASSIGNOR OF ONE-TENTH TO SAMUELJOHN MOORE, OF TORONTO, CANADA.

BLACK-LEAF CHECK-BOOK.

SPECIFICATION forming part of Letters Patent No. 323,276, dated July 28,1885. Application filed July 7, 1884. (No model.) Patented in CanadaSeptember 6, 1884, No. 20,148.

To all whom it may concern.-

Be it known that I, THOMAS Gnonen Coor- ER, of the village of Jarvis, inthe county of I-Ialdimand, in the Province of Ontario, Ganada,gentleman, have invented certain new and useful Improvements in BlackLeaf Check-Books; and I do hereby declare that the following is afull,clear,and exact description of the same.

The invention relates to that class of blackleaf check-books in whichseveral copies of the writing are taken simultaneously, a black leafbeing inserted between each of the copyingleaves, and a metal plateplaced below thelast leaf to receive the copy in order to separate itfrom the balance of the leaves remaining in the book; and it consists inthe peculiar combinations and the construction and arrange ment ofparts,hereinafter more fully described and claimed.

Figure 1 is a perspective view of my improved black-leaf check-book,showing the copying-leaves, metal plate, and black leaves thrown backclear of the body of the book. Fig. 2 is a perspective view showing themetal plate placed in position and the first black leaf in the act ofbeing placed. Fig. 3 is a perspective view showing the metal plate andblack leaves in-position, and the top leaf,which has been written on, inthe act of being raised.

The drawings represent a black-leaf checkbook designed to receive twocopies of the original writing; but of course the number may be greatlyincreased by simply increasi ng the number of black leaves, and addingto the leaves on which the writing is transcribed.

A, B, and G are three leaves separated by perforated lines a, so thatthey can readily be detached, if necessary. The end of the leaf A, itwill be noticed, is attached to the back of the book, while the otherleaves, B and G, are simply folded into the book, and form what mightpractically be termedfly-leaves.

D is a zinc or other sheet-metal plate connected to the back of the bookby a double joint or flexible hinge, E, the flexible hingeE beingdesigned to allow the plate D to accommodate itself to the decreasingthickness of the book as the leaves are removed. I show metal hinges inthe drawings; but it will be understood that leather or other flexiblematerial might be used instead.

F and G are two black leaves connected to the same or opposite side tothat on which the plate is hinged.

When the book is to be used for writing memoranda, the series of leavesA, B, and O to receive the memorandum are open, so as to permit thesheet-metal plate D to be placed between them and theleaves itis notintended to copy on. The leaf A is then placed on top of the tin plateD, and the first black leaf, F, is thrown on top of it. Then the leaf Bis folded back over the black leaf F, when the black leaf G is placed ontop of B, and the leaf O on top of it. On this latter leaf thememorandum is written, the black leaves G and Ftransmitting the writingonto the leaves B and Awhile the plate D prevents the impression goingany farther. \Vhen the memorandum is finished, the leaves 0, B, and Amay be thrown back into the position shown in Fig. 1, the black leaves Fand G being thrown out during the operation. The leaves thus thrown outmay be left connected to the book without interfering with writing afurther memorandum on the other leaves below the plate D, the saidlatter leaves being simply taken out and manipulated in the same manneras A, B, and 0.

Owing to the perforated lines a, the leaves 0 and B can be detached andthe leaf A allowed to remain in the book; or this latter leaf may alsobe torn out, if desired.

Although I think it preferable to attach the leaves A, B, and 0together, so that they may be manipulated as described, the advantage ofthe hinged plate D may be in a great measure secured in a book in whichthe leaves are s'eparately bound into the book. In this arrangement aplate attached to the book so that it will not draw out, and will at thesame time accommodate itself to the decreasing thickness of thebook,will be secured.

In another application filed by me July 24, 1884, Serial No. 138,605, Ishow and claim a single black leaf held to the cover at right a11- glesto the fold of the leaves; but in that construction the leaves have butone fold, and the fastening means are portable and independent of thebook structure.

I do not claim anything new in the employ- I ment of a sheet-metal plateand a number of black leaves placed vbetween the copyingleaves; but

XVhat I do claim as my invention is 1. The leaves A, B, and 0, connectedtogether, and having one of their ends fastened to the book, incombination with the black leaves F and G, fastened to the book at rightangles to the fastening of the leaves,and the sheet-metal plateD,fleXib1y connected to the book at right angles to the connection ofthe leaves A, B, and G, substantially as described.

2. In a black-leaf checkbook arranged to produce simultaneously severalcopies of a written memorandum, the leavesA, B, and 0, connected to andfolded in the book as de- THOS. e. coornn.

In presence of CHARLES Oi BALDWIN, J AS. E. MAYBEE.

